Azarcon, R. A. C., & Tiangco, C. F. (2013). Assertiveness scale: Development and validation. University of the Philippines Diliman Extension Program in Pampanga.
Παραπομπή σε μορφή Chicago (17η εκδ.)Azarcon, Richel Angeles C., και Cristabel Fagela Tiangco. Assertiveness Scale: Development and Validation. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2013.
Παραπομπή σε μορφή MLA (9th εκδ.)Azarcon, Richel Angeles C., και Cristabel Fagela Tiangco. Assertiveness Scale: Development and Validation. University of the Philippines Diliman Extension Program in Pampanga, 2013.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.